Solder for aluminium



PATENT OFFICE.

FELIX FR-ANQOIS BOISSELIER, 0F COLOMBES, FRANCE.

SOLDER FOR ALUMINIUM.

No Drawing.

To all whom it may concern:

Be it known that I, Flinn; F nANgoIs Borssrrinn, citizen of the Republic of France, residing at Q Place Galilee a Colonibes, Seine. in. the Republic. of France, have invented new and useful lmproven'icnts in Solders for Aluminium, of which the following is a specification.

This invention relates to solder for soldering parts or articles made of aluminium or of alloys of aluminium, such as the gear cases m an unohile or aviation motors-- This solder con'iposed of an alloy of Aluminium 28 it Zinc 37.5% Tin Copper we, 1.5%

without any fear and used as fixing means Specification of Letters Patent.

Application filed February 14, 1919.

Patented June 22, 1920. Serial No. 277,096.

for the gear case. The improved solder can also he used advantageously for lining or loading different gear case parts etc.

The improved solder is very convenient in use. The parts requiring to be soldered should first be Well coated and heated moderately to about 400 C. steel spatulze should be used for handling the solder in the operation.

The color of the soldered part is the same as that of the other parts 'of the gear case.

Soldering done six months ago on motors has not altered in any way eithe as regards color or from a mechanical point of view.

To make such solder, tin is first melted down alone; when it is liquirh copper is added to it, the mixture is then stirred with a steel spatula; When the copper is melted aluminium and afterward zinc is added thereto.

Haringnow described my ii'ivention what I claim. as new and desire to secure by Let' ters Patent is:

Solder for soldering; aluminium parts or aluminium alloys com msed of the following alloy: 28 per cent. of aluminium from 36.5 to 37.5 per cent. of Zinc 323 per cent. of tin and. from to 1.5 per cent. of copper.

In testimony \vhcrco't l have signed. my name to this specification.

' FELIX FRANCOIS masseuse. 

